This article describes Update Rollup 1 for Microsoft Windows 2000 Service Pack 4 (SP4). Update Rollup 1 for Windows 2000 SP4 was released June 28, 2005.

This update rollup contains a list of security-related updates produced for Windows 2000 between the release of Windows 2000 SP4 and April 30, 2005. April 30, 2005 is the date when the contents for Update Rollup 1 were locked down for final testing by Microsoft, external beta testing sites, and customer sites. Additionally, this update rollup contains several important non-security updates.

This article contains detailed information about this update rollup, answers frequently asked questions about this update rollup, and lists the fixes that are included in this update rollup.

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